carb w/o break bost line? Help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79gmcc15 · 04-22-2009, 02:45 AM

so, I found a carb on criags list. went out there and it looked really, really good. best one Ive seen so far. so I take it home, take off my old carb and notice that the "new" carb does not have the hole to screw in my break line! so, will it run with out that hooked on? what will happen if the brake line isn't hooked up? I do have a Rochester carb *just like the "new" carb, just newer in age* that has the throttle plate that has the brake line but I don't think the bushings are good. is it possible to drill/tap in the "new" carb to make it work? or a way to hook up some other line to make the power brakes work? Thank y'all! Matt

Manbearpig · 04-22-2009, 02:54 AM

It will run fine without it hooked and you won't have power brakes.

You could probably swap your throttle body off your "older" carb to the one you bought and that will solve your problem

No need to drill anything

*78 Chevyrado* · 04-22-2009, 03:16 AM

Just hook it up to the intake manifold somewhere. it'll work just as good. I wouldn't drill into your new carb, or you may end up with brand new junk. They do make spacers with the hole in it.

79gmcc15 · 04-22-2009, 04:50 AM

wow very fast reply's guys, thanks! I will look into switching out the plates and looking for the spacer. the carb is from a early 70's. so I noticed it doesn't have as many vacuum ports on the plate. so I might have to cut out some of the non important stuff.

Manbearpig · 04-22-2009, 04:55 AM

Just use your old plate

Save a buncha hassle

04-22-2009, 02:45 AM	#1
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	carb w/o break bost line? Help! so, I found a carb on criags list. went out there and it looked really, really good. best one Ive seen so far. so I take it home, take off my old carb and notice that the "new" carb does not have the hole to screw in my break line! so, will it run with out that hooked on? what will happen if the brake line isn't hooked up? I do have a Rochester carb just like the "new" carb, just newer in age that has the throttle plate that has the brake line but I don't think the bushings are good. is it possible to drill/tap in the "new" carb to make it work? or a way to hook up some other line to make the power brakes work? Thank y'all! Matt __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

04-22-2009, 02:54 AM	#2
Manbearpig Registered User Join Date: Mar 2009 Location: Midland, Tx Posts: 418	Re: carb w/o break bost line? Help! It will run fine without it hooked and you won't have power brakes. You could probably swap your throttle body off your "older" carb to the one you bought and that will solve your problem No need to drill anything __________________ 1972 GMC C10

04-22-2009, 03:16 AM	#3
78 Chevyrado Account Suspended Join Date: Dec 2007 Location: Unnapreciative, Trollville Posts: 2,079	Re: carb w/o break bost line? Help! Just hook it up to the intake manifold somewhere. it'll work just as good. I wouldn't drill into your new carb, or you may end up with brand new junk. They do make spacers with the hole in it.

04-22-2009, 04:50 AM	#4
79gmcc15 Gettin It One Pice At A Time Join Date: Oct 2004 Location: everett, washington Posts: 2,688	Re: carb w/o break bost line? Help! wow very fast reply's guys, thanks! I will look into switching out the plates and looking for the spacer. the carb is from a early 70's. so I noticed it doesn't have as many vacuum ports on the plate. so I might have to cut out some of the non important stuff. __________________ RIP ELJAY Work In Progress 1979 GMC C1500 Trailering Special. Getting the truck done, one piece at a time. “You can tell a lot about a fellow’s character by his way of eating jellybeans.”Ronald Reagan “I don’t know the key to success but I know the key to failure is trying to please everybody.” Bill Cosby

04-22-2009, 04:55 AM	#5
Manbearpig Registered User Join Date: Mar 2009 Location: Midland, Tx Posts: 418	Re: carb w/o break bost line? Help! Just use your old plate Save a buncha hassle __________________ 1972 GMC C10 Last edited by Manbearpig; 04-22-2009 at 04:55 AM.



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